Answer:
-2(x - 5) = 12
-2x + 10 = 12
-2x + 10 - 10 = 12 - 10
-2x = 2
-2x/-2 = 2/(-2)
x = -1
Thus, The answer is (-1) and the mistake is multiplication of sign i.e.,
[ (-) × (-) = (-) ] this is wrong ×
But
[ (-) × (-) = (+) ] this is right ✓
-TheUnknownScientist 72